Pump-cylinder protector.



R. E. WHEELER. PUMP CYLINDER PROTECTOR. APPLICATION FILED MN. 25. I915Patented Jan. 11, 1916.

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Application filed lanuary 25,1915. Seria1 Nb.4,272.

To all whom it may concern:

Be it known that I, Roi EDWIN WHEELER, a citizen ofthe United Statesresiding at Kittitas, in the county of Kittitas and'St-ate. ofIVashington, have invented certain new and useful Improvements inPump-Cylinder Protectors; and I do declare the following to be a full,clear, and exact description of the invention, such as will enableothers skilled in the art to which it appertains to make and use thesame.

This invention relates to improvements in protectors for pump barrels orcylinders and which are commonly known as rivet catchers and aredesigned to catch the rivets that frequently become disconnected fromthe joints between the parts of the rod employed to move the piston rodor working valve up and down, and which rivets when they becomedisconnected drop down into the working barrel of the well and seriouslyinterfere with the proper working of the pump or valves and cause injuryto the valve rod or pump and other portionsof, the pump by cutting andwearing the same and at times become lodged between the working parts ofthe pump or valves and the working barrel.

The object of the invention is to provide a simply constructed andefficient device of this character which may be readily ap plied to theplunger rod of a pump and which will ofier very little resistance to thereciprocation of said rod.

With this and other objects in view, the invention consists of certainnovel features of construction, combination and arrangement of parts aswill be more fully described and claimed.

In the accompanying drawings Figure 1 represents a longitudinal verticalsection through a pump barrel showing tlns mproved protector in sideelevat on therein; Fig. 2 is a longitudinal vertical section through theprotector; Fig. 3 is a horizontal 7 section taken on the line 3-3 ofFig. 2; Fig. 4: is a similar view taken on the line H of Fig. 2. Fig. 5is a similar View on line 5-5 of Fig. 2.

In the embodiment illustrated a pump barrel or cylinder 1 is shownhaving the usual piston or plunger rod 2 mounted to reciprocate thereinand both of which may be of any suitable or desired length. The rod 2has the usual valve 3 mounted thereon and disposed on said rod justabove this specificationiof Letters Patent. Patenvlal ve isthe,catcheror protector constituting this invention' This catcher comprisesaihollowinvertedtruncatedLeone-shaped; cup

5preferably constructed of sheet metal and having a cylindrical sleeve 6at its lower smaller end of a size to encircle and closely fit'the rod 2and it is secured to said rod by a clamping collar 7. This conical cup 51s preferably struck out of a sheet of metal plate and the side edgesthereof are overlapped and secured together by riveting or in any othersuitable manner, the seam of the lower end of the cup and of the sleeve6 being left open to provide for expansion and contraction. The widerupper end of the cup is of a diameter slightly less than that of thecylinder 1 to which it is to be applied so as to permit the cup to movefreely in the cylinder without contact therewith. A brace 8 extendstransversely across the upper end of the cup 5 and has an outwardlybowed central portion 9 adapted to encircle one-half of the rod 2 andwhich has apertures 10 at the opposite sides of said bowed or loopedshaped portion 9 to receive a cooperating clamping member 11 hereinshown U-shaped with the free ends of its legs threaded to receiveclamping nuts 12 after said legs have been passed through the aperturesin the brace. The walls of this cup 5 are provided with a plurality ofopenings forv the passage therethrough of water or other liquid toprevent interference with the operation of the pump and these openingsare herein shown in the form of longitudinally extending laterallyspaced slits l3 arranged around the periphery of the cup.

The inverted cone shape of the cup 5 facilitates its downward passagethrough the cylinder 1' offering a minimum resistance and thearrangement of the slits there in for the passage of the water permitsit to move in the opposite direction Without presenting much resistance.

From the foregoing description it will be obvious that should any rivetsor other particles become loosened and drop down in the cylinder theywill he caught by this cup 5 and held therein, thereby preventing themfrom injuring any of the parts of the pump and they may remain in thecup indefinitely tea-Jan; 11?, was;

open at both ends and adapted to encircle thereof mounted in saidapertures, and a pump rod, said cup having a longitudimeans forfastening said legs in said apernally extending opening in its lower endto tures. a r provide for expansion and contraction, In testimonywhereof Ihave hereunto set '5 means for clamping the lower end of saidmy hand in presence of tWo subscribing 15 cup to a rod, a braceextending transversely Witnesses.

across the larger end of said cup and having ROY EDWIN WHEELER. a bowedcentral portionwith apertures on a WVitnesses: opposite sides of saidbowed portion and U- H. L. J OHNSEND,

10 shaped clamping member having the legs A. I. ODEGARD.

Copies of this patent may be obtained for five cents each, by addressingthe Commissioner of Patents,

Washington, D. G.

